JPH0324543Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a winding machine for winding sheets such as wallpaper. After winding the sheet around a core and extracting the core from the obtained small roll, the sheet is again pulled out from the large roll and used for winding.

(Prior art) A core installed between the head stock and tail stock of a sheet winder for winding sheets of wallpaper, etc., which winds the sheet directly without fitting a paper tube. , Jitsukai 61-
In Japanese Patent No. 75475, a slotted hole is cut along the length of the winding core body which is removably formed between the headstock and tailstock, and an elongated flat blade that can be housed in the slotted hole is provided. A plurality of links are connected to the inner wall of the slot so that the blade can move parallel to the core body and move in and out of the slot, and the link is positioned slightly beyond the dead center when the link is erected. A stopper is provided to stop the link, and the sheet is wound with this link upright and the blade protruding from the slot. After winding the sheet to the required length, the seed is cut and the sheet is wound. A method is described in which the core is removed from the sheet winder, and then the blade of the core is recessed into a slot to remove the core from the rolled sheet.

(Problems to be Solved by the Invention) The conventional winding core described in Japanese Utility Model Application No. 61-75475 is used in a sheet winding machine together with the rolled sheet each time a sheet of a desired length is wound up. It was necessary to remove it from the The sheet is wound with the link connecting the slotted inner wall of the core body and the blade standing almost perpendicularly to the core body, slightly beyond the dead center, so that the sheet can be rolled. In order to remove the winding core from the sheet, it is necessary to tilt the link above the dead center in the opposite direction from when it is erected, which is troublesome.

This idea allows the sheet to be wound directly onto the core without using a paper tube, and the rolled sheet can be pulled out by simply moving the other end slightly while leaving one end of the core attached to the sheet winder. To provide a sheet winding machine that can take up a sheet and automatically move an elongated blade in and out of a winding core.

(Means for solving the problem) An elongated flat blade is housed in a slot provided along the length of the core body, and this blade moves parallel to the core body to solve the above problem. In a sheet winding machine, the sheet is wound on the winding core by rotating a winding core formed by connecting the blade with a plurality of links inside the slot so that the blade can move in and out of the slot. One end of the core body is swingably connected to the tail stock side of the sheet winder via a spherical bearing, and the other end of the core body is provided with an operating bar that is slidable along the center line of the core body. One end of the actuating bar is attached so that it protrudes into the slot and the other end protrudes outward from the end face of the core body, and one end of the actuating bar and the blade are connected to each other so that when the other end of the actuating bar is retracted, the blade is inserted into the groove. When the other end of the actuating bar protrudes from the hole, the blade is connected by a link so that it sinks into the slot, and the actuating bar is biased toward the other end by a spring, and the other end of the core body is connected to the head stock side. and the end of the winding rotation shaft are formed into a clutch shape that can be freely engaged and disengaged from each other, and when the core body is attached to and removed from the guide bracket that supports the connecting portion of the core body and the winding rotation shaft, the core body is A guide surface is provided in contact with the lower surface and end surface of the other end, and is used to retract the actuating bar into the core body against the elasticity of the biasing spring when the other end of the core body is attached. It is characterized by having been provided.

(Function) By rotating the core body using the spherical bearing at one end on the tail stock side as a fulcrum, and inserting the other end on the head stock side along the guide surface of the guide bracket up to the position of the winding rotation axis, the core body can be rotated. When the actuating bar protruding from the other end is pushed in against the biasing force of the spring, a long and thin blade protrudes from the slot, so a sheet is wrapped around the blade and the core body, and the sheet is shaped like an egg in cross section. Can be wound into a roll. In addition, after winding, the other end of the winding core body is separated from the winding rotation shaft and pulled out.
When the actuating bar is released, the actuating bar protrudes from the other end of the core body due to the biasing force of the spring, and the blade sinks into the slot, relieving the pressure between the flat plate and the rolled sheet. Because it is done,
The rolled sheet can be easily extracted from the core.

(Example) In FIGS. 1 to 3, the winding core 1 includes a round bar-shaped winding core body 2, a flat plate-shaped blade 3, a thin rod-shaped actuating bar 4, short first links 5, 5 for connection, and It is composed of a second link 6. The above-mentioned winding core body 2 has a small diameter shaft portion 2 at one end (left side in Fig. 1).
a has a bar guide 2b for supporting the operating bar 4 at the other end thereof, and is swingably connected to the tail stock of the sheet winding machine via a spherical bearing 10 attached to the outer end of the shaft portion 2a. has been done. Also,
A ball bearing 11 is attached to the inner end of the shaft portion 2a, and this ball bearing 11 rides on a horizontal table 12 on the tail stock side.
When the winding core 1 is swung horizontally with 0 as the fulcrum, the ball bearing 11 rolls on the horizontal table 12.
Note that a collar 13 is installed between the spherical bearing 10 and the ball bearing 11.

A slot 2c is cut out along the length of one side of the central large diameter portion of the core body 2, and enlarged portions 2d and 2e with a wider groove width are formed at both ends of the slot 2c. An elongated flat blade 3 is accommodated in this slot 2c, and the vicinity of both ends of the blade 3 are connected to the slot 2c via first links 5, 5 for connection.
It is connected to the enlarged parts 2d and 2e of c, and these constitute a parallel link mechanism. Note that 5a and 5b are connecting pins.

The end of the blade 3 on the headstock side is
It is connected to the inner end of the actuating bar 4 by a second link 6 and connecting pins 6a, 6b. This actuating bar 4 consists of an inner small diameter part 4a and an outer large diameter part 4b, and the center hole 2 of the bar guide 2b of the core body 2
f, and is urged outward by a compression coil spring 7 loaded into the center hole 2f. When the actuation bar 4 is pushed inward against the compression coil spring 7, the first links 5, 5 stand up almost vertically as shown in the figure.
The blade 3 protrudes outward from the slot 2c and the winding core 1
The cross-sectional shape of the winding core 1 is changed from circular to non-circular, and when the compression coil spring 7 is released, the first link 5 collapses, the blade 3 sinks into the slot 2c, and the cross-sectional shape of the winding core 1 returns to a circular shape. It can be done.

Notch steps 2g (see FIG. 2) are formed on both sides of the end surface of the bar guide 2b of the winding core body 2, and an end surface step 14a of the winding rotation shaft 14 on the headstock side.
They engage with each other to form a clutch that can be engaged and disengaged at will. The guide bracket 15 that supports the connecting portion of the core body 2 and the winding rotation shaft 14 includes a horizontal guide surface 15a and a vertical guide surface 15b that respectively guide the lower surface and end surface of the bar guide 2b of the core body 2. , an inclined surface 1 that extends outward following the near side (lower side in FIG. 1) of the vertical guide surface 15b.
5c is formed, and on the opposite side of the horizontal guide surface 15a (upper side in FIG. 1), a semi-cylindrical surface 15d is formed that extends halfway around the outer periphery of the bar guide 2b. A shaft hole 15e into which the winding rotation shaft 14 is inserted is bored in the intersecting vertical guide surfaces 15b.
The end surface stepped portion 14a of the winding rotation shaft 14 inserted into e.
The valley portion forms the same surface as the vertical guide surface 15b.

In the above structure, when the winding core 1 is placed at the winding position shown in the figure, the actuating bar 4 is pushed inward by the valley of the end face step 14a of the winding rotation shaft 14, and is pulled inward.
The blade 3 projects outward. When the winding rotation shaft 14 is driven, the rotation is transmitted to the winding core 1 through the meshing portion between the end face stepped portion 14a of the winding rotation shaft 14 and the bar guide 2b, and the blade 3 protrudes. A sheet (not shown) is wound onto the core 1, which has a non-circular cross section, without slipping.

After winding the sheet to a predetermined length, cut the sheet,
The head stock side of the winding core 1 is placed on the horizontal guide surface 15a.
When the bar guide 2b of the winding core body 2 comes out of the engagement part with the winding rotation shaft 14 and the end surface of the bar guide 2b passes the vertical guide surface 15b and reaches the inclined surface 15c, bar guide 2
The end of the actuating bar 4 protrudes from the end surface of b due to the elasticity of the compression coil spring 7, and the blade 3 sinks into the slot 2c of the core body 2.

After the rolled sheet wound around the winding core 1 is removed from the winding core 1, the bar guide 2b at the end of the winding core 1 is placed in front of the horizontal guide surface 15a of the guide bracket 15, and the sheet is taken up and rotated. When pushed toward the shaft 14, the protruding end of the actuating bar 4 aligns with the vertical guide surface 15b.
, and the blade 3 protrudes again.

(Effect of the invention) The sheet winder of this invention has an operation in which one end of the core body is swingably connected to the tail stock side of the sheet winder via a spherical bearing, and the core body protrudes from the other end. A guide bracket in which a sheet winding blade is formed to move in and out of a slot in the core body in conjunction with the advance and retreat of the bar, and the operating bar can be moved back and forth in the axial direction by moving the core in and out of the headstock side. , the other end of the core body is separated from the winding rotation shaft, and when the core is tilted by pulling it out along the guide bracket, the actuating bar automatically protrudes and the blade moves from the winding core body. The rolled sheet inserted into the slot and wound around the core can be pulled out from the core, and at this time, since one end of the core is connected to the tail stock, the above-mentioned extraction is easy. On the other hand, when the other end of the core body is pushed in along the guide surface of the guide bracket on the headstock side and connected to the winding rotation shaft, the protruding operating bar mentioned above automatically retracts and slides into the slot in the core body. The blade protrudes from the core body, and the cross section (outline) of the core body is deformed into a non-circular shape, making it possible to wind the ends of the sheet.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of this invention, FIG. 2 is a rear view of FIG. 1, and FIG. 3 is a sectional view taken along the line -- in FIG. 1... Winding core, 2... Winding core body, 2c... Slot hole,
3... Blade, 4... Operating bar, 5, 6... Link, 7... Compression coil spring, 10... Spherical bearing, 14... Winding rotation shaft, 15... Guide bracket.

Claims (1)

[Scope of utility model registration request] An elongated flat blade is housed in a slot provided along the length of the core body, and the blade is moved in parallel to the core body so that it can emerge and retract from the slot. In a sheet winding machine that winds a sheet onto the core by rotating a core connected by a plurality of links inside a slot, one end of the core body is mounted on a spherical bearing on the tail stock side. an operating bar that is slidable along the center line of the core body at the other end of the core body, one end of which protrudes into the slot;
The other end of the actuating bar is attached so that it protrudes outward from the end surface of the core body, and the blade is connected to one end of the actuating bar so that when the other end of the actuating bar is retracted, the blade protrudes from the slot and the other end of the actuating bar protrudes. At the same time, the blade is connected by a link so as to be recessed into the slot, and the operating bar is biased toward the other end by a spring, and the other end of the winding core body and the end of the winding rotation shaft on the headstock side are connected. are formed into a clutch shape that can be freely engaged and disengaged from each other,
A guide bracket that supports the connecting portion of the core body and the winding rotation shaft is used to guide the core body in contact with the lower surface and end surface of the other end of the core body when attaching and detaching the core body, and to guide the bracket when the other end of the core body is attached. A sheet winding machine characterized in that a guide surface is provided for retracting the actuating bar into the core body against the elasticity of the biasing spring.